All maps show detailed track information, essential facilities, GPS positions, explorers' routes and useful contact numbers. The six maps in the Great Desert Tracks series are now printed on synthetic paper, making them waterproof, tear-resistant and durable. Latest edition maps are always included and they consist of: Great Desert Tracks NW Sheet (4th Edition) Great Desert Tracks SW Sheet (4th Edition) Great Desert Tracks NC Sheet (4th Edition) Great Desert Tracks SC Sheet (4th Edition) Great Desert Tracks NE Sheet (4th Edition) Great Desert Tracks SE Sheet (4th Edition) Simpson Desert (2nd Edition) Latest edition released April 2007